I think you can “get away” with 75Mbps. Try to avoid streaming over wifi if possible and use a wired connection. I just checked out the deals in my area and the 400Mbps plan was $10 cheaper than the 200 plan - so see what your other options are and if it would make more sense for you.

I’ve used Dell Mini PC’s and Tailscale to do what /u/leewhat suggested. Works very well. You can find used ones on eBay for cheap. If you don’t want to order anything and just want to use what you have, pretty much any PC will do - even a laptop.

It’s not an 8 port, but maybe you can run two of these?

https://store.ui.com/us/en/products/usw-flex-mini